linux-kernel - [PATCH 2/6] net: stmmac: dwmac-sun8i: remove regulator

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date:   Mon,  9 May 2022 07:48:53 +0000
From:   Corentin Labbe <clabbe@...libre.com>
To:     alexandre.torgue@...s.st.com, andrew@...n.ch, broonie@...nel.org,
        calvin.johnson@....nxp.com, davem@...emloft.net,
        edumazet@...gle.com, hkallweit1@...il.com,
        jernej.skrabec@...il.com, joabreu@...opsys.com,
        krzysztof.kozlowski+dt@...aro.org, kuba@...nel.org,
        lgirdwood@...il.com, linux@...linux.org.uk, pabeni@...hat.com,
        peppe.cavallaro@...com, robh+dt@...nel.org, samuel@...lland.org,
        wens@...e.org
Cc:     netdev@...r.kernel.org, devicetree@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        linux-sunxi@...ts.linux.dev, Corentin Labbe <clabbe@...libre.com>
Subject: [PATCH 2/6] net: stmmac: dwmac-sun8i: remove regulator

Now regulator is handled by phy core, there is no need to handle it in
stmmac driver.

Signed-off-by: Corentin Labbe <clabbe@...libre.com>
---
 .../net/ethernet/stmicro/stmmac/dwmac-sun8i.c | 37 +------------------
 1 file changed, 2 insertions(+), 35 deletions(-)

diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac-sun8i.c b/drivers/net/ethernet/stmicro/stmmac/dwmac-sun8i.c
index f834472599f7..17888813c707 100644
--- a/drivers/net/ethernet/stmicro/stmmac/dwmac-sun8i.c
+++ b/drivers/net/ethernet/stmicro/stmmac/dwmac-sun8i.c
@@ -17,7 +17,6 @@
 #include <linux/phy.h>
 #include <linux/platform_device.h>
 #include <linux/pm_runtime.h>
-#include <linux/regulator/consumer.h>
 #include <linux/regmap.h>
 #include <linux/stmmac.h>
 
@@ -59,7 +58,6 @@ struct emac_variant {
 
 /* struct sunxi_priv_data - hold all sunxi private data
  * @ephy_clk:	reference to the optional EPHY clock for the internal PHY
- * @regulator:	reference to the optional regulator
  * @rst_ephy:	reference to the optional EPHY reset for the internal PHY
  * @variant:	reference to the current board variant
  * @regmap:	regmap for using the syscon
@@ -69,7 +67,6 @@ struct emac_variant {
  */
 struct sunxi_priv_data {
 	struct clk *ephy_clk;
-	struct regulator *regulator;
 	struct reset_control *rst_ephy;
 	const struct emac_variant *variant;
 	struct regmap_field *regmap_field;
@@ -568,29 +565,11 @@ static int sun8i_dwmac_init(struct platform_device *pdev, void *priv)
 {
 	struct net_device *ndev = platform_get_drvdata(pdev);
 	struct sunxi_priv_data *gmac = priv;
-	int ret;
 
-	if (gmac->regulator) {
-		ret = regulator_enable(gmac->regulator);
-		if (ret) {
-			dev_err(&pdev->dev, "Fail to enable regulator\n");
-			return ret;
-		}
-	}
-
-	if (gmac->use_internal_phy) {
-		ret = sun8i_dwmac_power_internal_phy(netdev_priv(ndev));
-		if (ret)
-			goto err_disable_regulator;
-	}
+	if (gmac->use_internal_phy)
+		return sun8i_dwmac_power_internal_phy(netdev_priv(ndev));
 
 	return 0;
-
-err_disable_regulator:
-	if (gmac->regulator)
-		regulator_disable(gmac->regulator);
-
-	return ret;
 }
 
 static void sun8i_dwmac_core_init(struct mac_device_info *hw,
@@ -1034,9 +1013,6 @@ static void sun8i_dwmac_exit(struct platform_device *pdev, void *priv)
 
 	if (gmac->variant->soc_has_internal_phy)
 		sun8i_dwmac_unpower_internal_phy(gmac);
-
-	if (gmac->regulator)
-		regulator_disable(gmac->regulator);
 }
 
 static void sun8i_dwmac_set_mac_loopback(void __iomem *ioaddr, bool enable)
@@ -1157,15 +1133,6 @@ static int sun8i_dwmac_probe(struct platform_device *pdev)
 		return -EINVAL;
 	}
 
-	/* Optional regulator for PHY */
-	gmac->regulator = devm_regulator_get_optional(dev, "phy");
-	if (IS_ERR(gmac->regulator)) {
-		if (PTR_ERR(gmac->regulator) == -EPROBE_DEFER)
-			return -EPROBE_DEFER;
-		dev_info(dev, "No regulator found\n");
-		gmac->regulator = NULL;
-	}
-
 	/* The "GMAC clock control" register might be located in the
 	 * CCU address range (on the R40), or the system control address
 	 * range (on most other sun8i and later SoCs).
-- 
2.35.1